Examples
Worked examples
- Is an instance
A doctoral thesis chapter that groups prior studies on a construct by theoretical school, weighs the methodological strengths and weaknesses of the studies within each school, and argues that one school's evidence base is stronger, closing with an explicit gap the writer's own study will address.
- Is an instance
A journal 'critical review' article (a recognized review sub-type in fields such as management, education, and the health sciences) that selects the most influential and representative papers on a debated concept, evaluates the coherence of competing definitions or models used across them, and proposes a refined or synthesized definition as its contribution.
Counter-examples
Looks similar, but isn't
- Not an instance
A systematic review, which commits in advance to an exhaustive, reproducible search strategy (often registered, e.g. in PROSPERO) and formal, protocol-driven quality appraisal of every eligible study, aiming to answer a narrow, pre-specified question rather than build an original argument.
- Not an instance
A purely descriptive literature review section that summarizes prior studies one after another, organized chronologically or by source, without weighing their comparative quality or using that evaluation to advance a position — this is sometimes what 'literature review' means colloquially, but it lacks the critical review's evaluative and argumentative core.
Editorial commentary
A critical literature review is a recognized review sub-type whose purpose is to evaluate and argue, not merely describe. Where a purely descriptive literature review recounts what each source found, a critical review goes further: it judges the quality, validity, and coherence of the claims across a selectively chosen body of literature, and uses that judgment to surface gaps, contradictions, or unresolved debates that justify further work, or to advance the writer’s own interpretation or theoretical position.
The term comes from a well-established review typology in library and information science: Grant & Booth’s 2009 analysis of 14 review types, published in Health Information & Libraries Journal, which applied a shared Search, AppraisaL, Synthesis, Analysis (SALSA) framework to characterize how different review types actually operate. Under that framework, a critical review is described as aiming to demonstrate that the writer has extensively researched the literature and critically evaluated its quality, going beyond description to include a real degree of analysis and conceptual innovation.
How it differs from systematic and scoping review
The distinction is not about topic but about method, and it matters for how a writer should plan and defend the work:
- Search strategy. A systematic review commits to an exhaustive, reproducible, and typically pre-registered search (see CASRAI’s PRISMA and systematic review methodology guide). A critical review instead selects significant, representative items in the field — a purposive rather than exhaustive search, chosen because it is sufficient to support the argument being built, not because it captures every eligible study.
- Appraisal. Systematic and scoping reviews generally apply a formal, pre-specified quality-appraisal protocol, sometimes using appraisal to decide what is included at all. A critical review’s appraisal is less formalized but not absent — it is exercised throughout, source by source, as part of building the argument, and is expected to be visible in how the writer discusses each source rather than reported as a separate scored instrument.
- Synthesis and output. A systematic review typically outputs a narrative synthesis with tabular evidence summaries and practice or research recommendations. A scoping review outputs a map of the extent, range, and nature of existing evidence. A critical review’s output is different in kind: it aims to identify a conceptual contribution and can derive or embody a new theoretical or interpretive position, not just summarize what is already known.
See CASRAI’s comparison of literature review vs. systematic review vs. scoping review for the broader family this term sits within, and the systematic review vs. meta-analysis comparison for how those two relate to each other.
Where it’s used
Critical literature reviews appear most often as: a chapter or section of a thesis or dissertation that justifies a research gap and situates the writer’s own study within a body of debate; a standalone journal article explicitly labeled a ‘critical review’ in fields such as management, education, and parts of the health and social sciences; and as the evaluative core of a grant proposal’s background section, where funders expect an argument for why the proposed work is needed, not just a list of prior findings.
Practical structure
Two techniques already documented for literature review writing generally apply directly to a critical review’s evaluative work. Organizing sources thematically or conceptually (rather than one-source-at-a-time) makes evaluative comparison across sources possible, and a synthesis matrix — a table with one row per theme and one column per source — is a widely-taught technique for tracking each source’s quality and position on a theme and for surfacing where the evidence is thin or contested. See CASRAI’s guide to writing a literature review for a fuller walkthrough of both, applicable to a critical review’s more evaluative version of the same underlying task.
Related terms
Systematic review, scoping review, living systematic review.
Machine-readable encodings
Use in your systems
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